Hard alloy sleeve type part inner hole key groove machining method

Abstract

The invention discloses a hard alloy sleeve type part inner hole key groove machining method. A procedure original point is arranged in an inner hole of a sleeve type part, a first cutting falling point and a second cutting falling point are designed on the inner hole according to the width of a key groove, a working table (used for driving a to-be-machined product) and / or a linear cutting wire are / is moved to enable the linear cutting wire to generate relative displacement relative to the working table, the sleeve type part is machined at the first cutting falling point and the second cuttingfalling point firstly until the requirement for the depth of the key groove is met, then machining is continuously carried out from the depth position of the key groove in the width direction of thekey groove until chipping falling happens, and machining of the key groove is completed. According to the linear cutting wire walking manner, the two cutting falling points are arranged, the final chipping falling position in the machining process is adjusted, falling defects at a groove opening of the key groove are avoided, the key size accuracy of the key groove is guaranteed, and the user requirement is met.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and relates to a method for machining an inner hole keyway of sleeve parts, in particular to a method for machining an inner hole keyway of a sleeve part made of hard alloy. Background technique [0002] In order to meet the requirements of use, it is usually necessary to design a keyway in the inner hole of the cemented carbide sleeve parts; take the cemented carbide bushing on the submersible oil pump widely used in deep sea, desert and other deep well oil operations as an example, the structure is as follows figure 1 and figure 2 As shown, the inner hole is designed with a keyway. In order to meet the requirements of the submersible pump in deep well oil operations, it is necessary to ensure the keyway width [1.6mm+(0~0.025)mm] and the keyway depth [L+(0 ~0.1)mm], the size of the air getter [0.05mm+0.025mm], the machining of this keyway adopts counterclockwise (processing direction) line...

AI Technical Summary

Problems solved by technology

However, the products and appearance obtained by the above processing methods are difficult to meet the high-precision requirements of the keyway width (such as the keyway width tolerance is 0.025mm)

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